JPS6240104B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a continuous casting apparatus, and particularly to a continuous casting apparatus with an improved guide table.

Casting wheel type continuous casting equipment, in which molten metal is injected from the top of the casting wheel and pulled out as slabs below the casting wheel horizontally or at a slight inclination, has a casting wheel that guides the slabs to a straightening device directly below the casting wheel. A guide table is provided for viewing.

In such equipment, the solidification of the slab directly under the casting wheel depends on the cooling method and the metal material, but since most of it is only in the surface layer, the solidified shell sometimes breaks due to various reasons. Accidents called breakouts, where the molten metal inside flows out, are likely to occur. As a result, the guide table may get caught in the spilled metal, and although operations are immediately halted and the guide table is being restored, slabs may be caught between the lower end of the casting wheel and the guide table. Therefore, restoration work required lifting the casting ring to the top and removing it.

However, cast wheels usually have a diameter of about 2500 mm and are made of copper, so they are heavy, weighing 2 to 3 tons.
Removal and loading work requires a great deal of effort.

In addition, the separator, which is integrated with the guide table and is used to separate and straighten the slab from the bottom of the casting ring mold groove, is easily deformed during operation due to slab straightening force, friction with the slab surface, etc., and its position must be adjusted properly. If this is not the case, there is a problem in that the tip of the separator is likely to bite into the outer periphery of the copper casting ring, resulting in a serious accident. For this reason, the dimension between the tip of the separator and the casting ring mold groove surface, the appearance of the separator, etc., are checked for any abnormalities after every casting.However, since the purpose of the separator is to separate and correct the slab, it is inserted into the casting ring mold groove and guided. Since it has to be built into the table, inspection and confirmation work is almost fumbling, which poses a problem for stable operation.

SUMMARY OF THE INVENTION An object of the present invention is to provide a continuous casting apparatus that can perform inspection and removal of slabs between a casting wheel and a guide table without moving the casting wheel.

According to the invention, the above object is achieved by configuring the guide table so that it can be moved towards and away from the casting wheel.

Hereinafter, details of the present invention will be explained in conjunction with embodiments shown in the drawings.

1 to 3 illustrate one embodiment of the present invention. In the figure, reference numeral 1 indicates a casting wheel, and a mold groove 2 is formed on its circumferential surface.
Tandetsu 3 is placed facing the front. In order to prevent the molten metal supplied from the tundish 3 from leaking to the outside, a metal belt 4 is formed endlessly and is in contact with the circumferential surface of the casting wheel 1 on the casting side.

The metal belt 4 is arranged so as to run in contact with a plurality of tension rollers 5. A base 6 is arranged inside the metal belt 4, and a moving device 7 consisting of a hydraulic cylinder or the like is mounted on the base 6.
is arranged, and a moving frame 8 moved by this moving device 7 is arranged. A tension generating device 9 consisting of a power actuator or the like is attached to the movable frame 8, and a tension roller 5 is attached to the tip thereof. The remaining tension roller 5 is attached to one end of the base 6.

A roller frame 10 is arranged below the casting wheel 1, and a number of guide rollers 11 are attached to this roller frame 10. One end of the roller frame 10 is rotatably supported on the machine base side via a shaft 12 at a position away from the casting wheel 1. For example, a power source is connected between the free end of the roller frame 10 and the lower part of the machine base. A lifting device 13 consisting of an actuator or screw jack is provided. Therefore, when the lifting device 13 is operated, the roller frame 10 is moved to the shaft 12.
By rotating the roller frame 10 around the casting wheel 1, the roller frame 10 can be moved toward and away from the casting wheel 1.

A separator 14 is integrally provided on the roller frame 10. This separator 14 separates and straightens the slab, and is fitted into the mold groove 2 of the casting wheel 1. And the above roller frame 1
0, a guide roller 11, a separator 14, and the like constitute a guide table 15.

Note that the reference numeral 16 indicates a slab, and the reference numeral 17 indicates a pinch roller for straightening the slab 16 into a flat plate shape.

Next, the operation of this embodiment configured as above will be explained.

First, the metal belt 4 is brought into contact with the circumferential surface of the casting wheel 1 to close the mold groove 2, the casting wheel 1 is rotated, and molten metal is supplied from the tundish 3 into the mold groove 2.
At least only the surface layer of the supplied molten metal solidifies in the mold groove 2, and as the casting wheel 1 rotates, it is sent in the direction of the guide roller 11, separated from the mold groove 2 by the separator 14, and a slab is formed. 16, and is sent to the next process while being corrected by a pinch roller 17.

At the time of breakout or inspection in the above casting process, the lifting device 13 is operated to move the guide table 15 away from the casting wheel 1 as shown in FIG. 2, and at the same time move the metal band 4 away from the casting wheel 1. For example, a large space can be obtained below the casting wheel 1, and inspection work can be carried out reliably. Furthermore, in the event of a breakout, the slab 16 can be suspended from a crane hook 18 as shown in FIG. 3 and easily removed from a large space.

FIG. 4 illustrates another embodiment of the present invention, in which the same parts as in FIGS. 1 to 3 are designated by the same reference numerals.

In this embodiment, instead of directly rotating the roller frame 10, a guide table 15 is fixed on the rotating table 19, and the rotating table 1
9 is supported on the machine base side via a shaft 20. If such a structure is adopted, it is possible to replace the guide table 15 at the same time when the maintenance has been completed outside the line, and maintenance accuracy is further improved.

In each of the above embodiments, a structure in which the guide table 15 is rotated around one end is adopted, but it goes without saying that a structure in which the guide table 15 can be vertically raised and lowered may also be used.

As is clear from the above description, according to the present invention, a structure is adopted in which the guide table can approach and move away from the casting wheel, so that the casting wheel and the guide table can be connected without moving the casting wheel. It is possible to provide a continuous casting apparatus capable of removing cast slabs in between and performing inspection work.

[Brief explanation of the drawing]

FIG. 1 is a side view illustrating an embodiment of the present invention;
2 and 3 are side views for explaining the operation, and FIG. 4 is a side view for explaining another embodiment of the present invention. 1...Casting wheel, 2...Mold groove, 3...Tandetshu,
4...Metal band, 5...Tension roller, 10...
Roller frame, 13... Lifting device, 14... Separator, 15... Guide table.

Claims (1)

[Claims] 1. In a continuous casting device equipped with a casting wheel having a casting groove on the outer periphery, a metal belt that closes an open part of the casting groove, and a guide table disposed directly below the casting wheel, the guide table is A continuous casting device characterized in that it is installed so that it can approach and move away from a casting wheel via an elevating device.